//
//  UIButton+Extension.swift
//  Swiftsweibo
//
//  Created by 张鹏飞 on 16/1/1.
//  Copyright © 2016年 张鹏飞. All rights reserved.
//

import UIKit

extension UIButton {

    /// 便利构造函数
    ///
    /// - parameter imageName:     图片名称
    /// - parameter backImageName: 背景图片名称
    ///
    /// - returns:  UIButton
    convenience init(imageName:String,backImageName:String){
    self.init()
    setImage(UIImage(named: imageName), forState:.Normal)
    
    setImage(UIImage(named:imageName + "_highlighted"), forState:.Highlighted)
    setBackgroundImage(UIImage(named: backImageName), forState:.Normal)
    setBackgroundImage(UIImage(named: backImageName + "_highlighted"), forState:.Highlighted)
    
    //根据背景图片调整大小
    sizeToFit()

    }
    /// 便利构造函数
    ///
    /// - parameter title:     title
    /// - parameter color:     color
    /// - parameter imageName: imageName
    ///
    /// - returns: UIButton
    convenience init(title: String, color: UIColor, backImageName: String) {
    
        self.init()
       setTitle(title, forState:.Normal)
       setTitleColor(color, forState: .Normal)
       setBackgroundImage(UIImage(named: backImageName), forState: .Normal)
        
        sizeToFit()
       
    }
    
    convenience init(title: String, fontSize: CGFloat, color: UIColor, imageName: String) {
        self.init()
    
        setTitle(title, forState: .Normal)
        setTitleColor(color, forState: .Normal)
        setImage(UIImage(named: imageName), forState: .Normal)
        
        titleLabel?.font = UIFont.systemFontOfSize(fontSize)
    }
}
